Tile press



Dec. 22 1925.

M. v.l WASH TILE PRESS Filed' April 4, 1925 3 Sheets-Sleet l M. V. WASH Dec. 22, 1925.

TILE PRESS Filed April v4, 1925 i5 sheets-sheet 3 yFIC-LE.

Miva-NMR Patented Dec.` 22, 19257.

UNITED STATES 'i 1,566,638 PATENT OFFICE.;

MILTON V. WASH, OF BEAVER FALLS, PENNSYLVANIA, ASSIGNOR TO BEAVER FALLS i ART TILE COMPANY, OF BEAVER FALLS, PENNSYLVANIA, A CORPORATION 0F PENNSYLVANIA.

TILE Pnnss.

Application filed April 4,1925. Serial No. 20,701.

To all whom it may concern.'

Be it known that I, MILTON V. VASH, a citizen of the United States, and a resident of Beaver Falls, in the county of Beaver and State of Pennsylvania, have inventeda new and useful Improvement in Tile Presses, of which the following is a speciiication.

The object of this invention is to provide a tile press of the general character of that disclosed in U. S. Patent No. 1,515,918 to Yingling with a lower die whichis rigidly supported during pressing operations, and with simple and effective mechanism for effecting the movement of the lower die upwardly with the upper die at the completion of a pressing operation, and downwardly thereafter independently ot the upper die. i

The invention is illustrated in the accompanying drawings of which Fig. 1 is a verf tical sectional view of a tile press, the plane of view being indicated by the vline I-I, Fig. 2; Fig. 2 a vertical sectional View at right angles to Fig-1, the plane of View vbeing indicated by the line II-II, Fig. 1; Fig. 3 a plan view of pressure controllingoperating mechanism, the plane of view being generally indicated by the line III-IIL Fig. 2, the valve casing shown in this View being indicated in section; Fig. 4 a sectional view taken on the line IV-IV, Fig. 3; and

Fig. 5 an elevation taken on the plane in-l dicated by the line V-V, Fig. 3. y

The machine comprises a frame 1 in which there is mounted for vertical reciprocation a plunger 2 provided on its lower end with an upper die 3. The plunger may be vertically reciprocated by means of a pair of toggle links 4 and 5, pivoted to each other at 6, the upper end of link 4 being pivotally suspended from a support 7, and the lower end of link 5 being pivotally attached at 8 to plunger head2, The pivot point' of the toggle levers may be moved horizontally to raise and lower plunger `2 by means of an arm 9, the outer end of which may be engaged by a cam borne by a rotary driven shaft 10. The parts of the press thus far explained are shown in dotted lines because they are fully disclosed in said patent to Yingling, to which reference may be made for a more detailed explanation of their construction and operation. Y

For the purpose of the present inventionit lateral movement of arm 9; that, While the plunger is raised, ydust for forming one or more tilesis placed in the lower die; that the plunger is then moved downwardly to form a tile; and that as the plunger rises after atile-pressing operation the lower die is caused to, rise with it so as to properly Ihold `the tile iny its` pressed form until removed from the side walls of the die." Vhile for the purpose of illustrating the invention it is shown in connection with a tile press similar to that disclosed in said Yingling patent, it will be understood that the vertical reciprocation of the plunger may be otherwise eected than as shown in said patent, Aand as generally explained above.

Y Having reference to Figs. 1 and 2, a lower die 12 is mounted on an anvil 13 which is movable vertically with the upperv die to raiseI pressed tiles, indicated at 14, above vertical walls 15- and' 16 which form their sides vand ends. I/Vhen in its lowermost position, anvil 13 is iirmly and unyieldingly supported by the top of a base blockv 17 which vis lprovidedwith cylindrical openings 18 and 19 for receiving pressure fluid. Arranged in cylinders 18 there are pistons 20 attached to anvil 13 by bolts 21, the arrangement being such that when Huid pressure enters the lower ends of cylinders 18 pistons 2() are moved upwardly to raise anvil 13.` In

cylinders 19 there are pistons 22 attached to and 27 rigidlyl connected to each other by a stem 28, and forming between them yand with casing 25 anair-tight annular chamber29 to which pressure fluid,.preierably compressed air, is supplied through a pipe 30. The movable valve element is attached to a Vrod 31 adapted to be reciprocated 1n the manner presently to be explained.

The Aends of casing are .provided with exhaust ports 32 and 33, and the side wall of the casing is providedI with ports 34' and 35k which communicate, respectively, with chambers 36 vand 37 formed on the 'side vof base block 17. As seen in Fig. 5, these chambers are of general triangular shape, being separated from each other by an inclined partition 39, the outlets of ports 34 and 35 being there indicated in dotted lines 'at the outer ends of chambers 36 and 37, respectively. Extending from the lower "end of chamber 37, there are passageways 40 which leadthroughbase block 17 to the lower ends of `cylinders V13. lIn a similar manner, extending Ifrom the upper end of chamber 36 there are passageway/s 41 leading to the upper ends of cylinders 19. Through these ports, chambers andpassageways pressure fluid is alternately supplied to cylinders 1S and 19, and 'exhaust vis alternately carried from the cylinders, depending upon the p'osition of the valve element as will presently be explained.. Y v

vFor moving the valve element in casing 25 to effect theupward andl downward lmovements of anvil 13, a ca-in 45 lis -attached to a rotatable gear: 46, which in turn is secured to driving shaft` 10, vand connections extend Y'from' this cani to'rod31 attached to the'valve element. Y These Vconnections include a rock shaft 47 lto which there is attached an arm 48 pivotally connected by a short link 49 to the outer end of rodv311. A second armV 50 -is attached at its lower end to rock shaft 47 and is connected at ;its'upper end by a link 60 to theouter end of an arm 51, `yattached toa vertically disposed 4rockshaitt 52'. At the upper end ofshat -52 there fis 1a horizontally disposed "arm 53, to whichthere is pivotally attached an extensionarm54 having a roller 55at its outerend adapted toengage cam 45. Roller 55 is yieldin-gly urged upwardly into cam-'engaging Vposition by a spring 56 which acts between "arm -54 and the lower end of -a bar 57 which .is'attached to -arm 53. Arm 54 is vconnected by a link 58 to a lever arm -59 for ydisconnecting the charging`- and agitating apparatus from eachv other as explained 'in said vYingling patent, it being `understood that when these two mechanisms `are disconnected .from each other vit is desirable tov stop the vert-ical reciprfocation Vlof anvil 13. Accordingly, when ope-rating -lever v5'9 lis turneddownwa-rdly, lllink -58 pulls arm 5,4 downward-ly against the resistance of spring 565s() -that roller 55 lies belewf'the'path of cam 45.

1 The valve operating connections thus described are -lt'or moving the Vvalve element from `the position in which it is indicated in Fig. 3 to its alternate'vposition,.which is at the right end fof'casing25v-as viewedfin Fig. 3. For moving the valve element in the opposite direction, -a spring 71 is arranged in'a housing 72 attached to the left end of casing 25, such spring bearing at its opposite ends upon head 26 and a nut surrounding rod `31 and 'engaging the ou'te'r 'end of this housing. A light weight buffer spring 61 is arranged in a housing v62 at the opposite endA of the casing for preventing impact ofthe mov-able valve element upon that end of the casing.

Through the connections extending from valve rod 31 to cam-engaging arm 54, spring 71 normally acts to yieldingly urge Acam rol-ler -55 into the path of cam 45. For manually controlling 'the position of the valve element when occasion arises -or Vdoing so, rock shaft ihas attached to ita horizontally' disposed '-a'rm 65, to the outer end of which there is pivotally connected the lower end of avertical link 66, the upper end of which is pivotally attached to a hand operated'lever 67 pivoted to frame 1 at 68.

In the operation of the machine, lassuming the vparts to be in the positions vindicated in the drawings, the lrotation of kgear 46brings cam v45 out of Aengagement with roller 55, which permits spring 71 to move the valve element to the right hand end of the casing as viewed vin Fig. 3. The trai-n of connections for thus moving valve rod-31 has been fully explainechand accordingly need not behere repeated. Whenthe valve ele ment 'is thus in the opposite position from that shown inthe drawings, the upper ends ofcy-linders 19 are open to exhaust through passageways 41, chamber 36, ports 34 and exhaust passageway 32. Pressure iiuid is then supplied tothe lower ends of chambers 18 through ipipe 30, chamber 29 between heads 26 and y27 of theivalve element, port 35, chamber'37, and pa'ssageways 40. The pressure Huid thus supplied to the lower ends of cylinders 18 below lpistons 20 vcauses anvil13 to rise with the yupward `movementofV plunger head 2 and upper die 3. This movement is continued until the ypressed tiles-are above the upper edges oi' side plates 15 and 16, and-die '12 is maintained in `'its upperposition until the vtiles are removed from it. At this 'time the end et :cam 45 engages roller 55, vand -moves'the valve lelement" to the left V.against the resistance of springr7 1, in which :position pressure Huid is supplied Ato 'the upper ends of cylinders 19 tov movel the a'nvil downwardly, and the lower ends of cylinders 18 are open lto exhaust. The flow-of pressure -uid and o-lexhaust ,to cause this downward :movement of the -anvil will be readily understoodY from the yforegoing explanation of the flow of pressure :fluid and exhaust. h

According 'to the lprovi-sions of the patent statutes, I have explained the principle and, dpe-ration vofmy invention, 4and have shown l fik) opposite CAI sent its best embodiment.v However', I de-` sire to have it understood that, within the scope of the appended claims, the invention may be practiced by other forms of construction than those specicallyillustrated and described. p f

I claim as my invention;

1. In a tile press, the combination of a reciprocable plunger provided with an upper die, a base block provided with two pressure cylinders, an anvil mounted for vertical movement in said block and provided with a lower die, raising and lowering pistons attac-hed to said anvil and arranged in said pressure cylinders, a valve comprising a casing communicating with said cylinders and an element movable to alternate positions for alternately controlling flow of pressure fluid to an exhaust from said cylinders, and means coordinated with the reciprocation of said plunger for moving said valve element. i

2. In a tile press, the combination of a reciprocable plunger pro vided with an upper die, a base block provided with two pressure cylinders, an anvilV mounted for vvertical movement in said block and provided with a lower die, raising and lowering pistons attached to said anvil and arranged in said pressure cylinders, a valve comprising a casing communicating with said cylinders and an' element movable to alternate positions for alternately controlling flow ot pressure i'luid to and exhaust from said cylinders, a rotary cam coordinated with the reciprocation of said plunger, and connections extending from said cam to said valve element for moving the latter.

3. In a tile press, the combination of a reciprocable plunger provided with an upper 'l die, a base block provided with two pressure Lits alternate positions.

cylinders, an anvil mounted for vertical movement in said block and provided with a lower die, raising and lowering pistons at-` tached to said anvil and arranged in said pressure cylinders, a valve comprising a casing communicating with'said cylinders and an element movable to alternate positions for alternately controlling flow of pressure fluid to and exhaust from said cylinders, a,

rotary cam coordinated with the reciprocation of said plunger, 'connections extending from said cam to said valve element for moving the latter to one of 'its alternate positions, and a spring acting uponrsaid valve element for moving it to the other ot 4. In a tile press, the combination ol' a reciprocable plunger provided with an upper die, a base block provided with two pressure cylinders, an anvil mounted fory vertical movement in said block and provided with a lower die, raising and lowering pistons attached to said anvil and arranged in said pressure cylinders, a valve comprisingk acasing communicating with said cylinders and-'an element movableI to alternate-positions for alternately controlling' iiow of pres-4 sure fluidtoI and exhaust from said cylinders, a rotary cam coordinated with'thev reciprocation of said plunger, an arm adapted to be engaged by said cam, connections between said arm andl said valve elementor moving the latter to one of' its alter-"nate positions, and a spring for moving said valve element to the other of its alternate positions and for maintaining said arm noi'- inally in the path of said cam.r

5. In a tile press, the combination oit reciprocable plunger provided with" an upper die, a base block provided with two pairsv ot pressure cylinders, an anvil mounted for vertical movement in saidl block and provided with a` lower die, a pair of raising pistons arranged in one of said pairs or' pressure cylinders and attached to said anvil, a pair of lowering pistons arranged in the other of said pairs of pressure cylinders and attached to said anvil, a valve comprising av cylindricalcasing communicating at one of its ends with one of said pairs of pressure cylinders and atits other end with the other of'said pairs of pressure cylinders, a valve element mounted for reciprocation in said casing lior alternately controlling flow of pressure fluid to and exhaust fromsaid pairs of cylinders, and' means coordinated with the reciprocation or' said plunger for moving said valve element. Y

6. In a tile press, the combination of a reciprocable plunger provided with an upper die, a base block provided with two pairs of pressure cylinders, an anvil mounted for vertical movement in said block and provided with a lower die, a pair of raising Vpistons arranged in 'one of said pairs of pressure'cylinders and attached to said anvil, a pair of lowering pistons arranged in the other of said pairs of pressure cylinders and attached to said anvil, a valve comprising a cylindrical casing communicating at one of its ends with one of said pairs of pressure cylinders and at its other end with the lother of said pairs of pressure' cylinders, a valve element mounted for reciprocation in said casing for alternately controlling flow of pressure fluid to and exhaust from said pairs of cylinders, a rotary cam coordinated with the reciprocation of said plunger, and connections extendingjfrom said cam to said valve element for moving the latter.

7. In a tile press, the lcombination of' a reciprocable plunger provided with an upper die, a base block provided withy two pairs of pressure cylinders, an anvil mounted for vertical movement .in said block and provided with a lower die, a pair of raisf ing pistons arranged in one of said'pairs of ico a pair of lowering' pistons arrangedin the other olf-said pairs of preslsure cylinders and attached to Said anvil, a valve compreng a ACylindrical casing communicating. at one of its ends with one of said pairs Aof pressure.

cylinders and at its other end with the other of said pairsvof pressure cylinders, alvalvei e meme@ withz thev reQiprQQat-ion of ;s..dj. plunger,A

movable army lying the path 0f Said' Cam,

connections betweensadi arm @Het Said telve element for moving the latter tqene of itsV Lfnatepositions7 and, a springl fgrrineying said valveeleinent tothe other of its ralter-lV alte nate pGstions and for maintaining sjaidyaiun normally 1n the path ofv saidl cam.

In testimony wher-eet, I- ysigninuy naine.

MILTON V. 'WASI-1;, 

